[feature]: Custom API rate limit on self-hosted

Is there an existing issue for this?

• I have searched the existing issues

Summary

Since we are using plane self-hosted on our own servers, we should be able to customize Plane API rate limit.

Why should this be worked on?

As an example, the company where I work forces us to use an old unfriendly project management app.
We negociated to be allowed to use Plane on dev teams, only if we find a way to keep it sync with the historical tool.
API rate limit could prevent me to do reatime sync.

Another solution would be to allow querying all issues at once (instead of per project), reducing necessary requests amount.